Concrete panel construction with a removable glazing assembly



June 7, 1966 w. E. WHITE ETAL 3,254,461

CONCRETE PANEL CONSTRUCTION WITH A REMOVABLE GLAZING ASSEMBLY Filed June18, 1962 4 Sheets-Sheet l INVENTORS WILL/AM E. WHITE Z 'HE RON F. BRENNE MA N ATTYS.

June 7, 1966 w. E. WHITE ETAL 3254 461 CONCRETE PANEL CONSTRUCTION WITHA REMOVABLE GLAZING ASSEMBLY Filed June 18, 1962 4 Sheets-Sheet 2INVENTORS 5 WILLIAM E. WHITE TH5R0/v F BRENNEMAN ATTYS.

W. E- WHITE ETAL June 7, 1966 CONCRETE PANEL CONSTRUCTION WITH AREMOVABLE GLAZING ASSEMBLY 4 Sheets-Sheet 3 Filed June 18, 1962INVENTORS WILL/AM E. WHITE g'HERo/v F. BRENNEMAN W rad-1W ATTYS.

June 7, 1966 w. E. WHITE ETAL CONCRETE PANEL CONSTRUCTION WITH AREMOVABLE GLAZING ASSEMBLY Filed June 18, 1962 4 Sheets-Sheet 4 FIG. I0

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INVENTORS WILLIAM E. WHITE THERON F. BRENNEMAN United States Patent Thisinvention relates to building panels and is more particularly concernedwith improvements in a precast or molded wall panel having incorporatedtherein a fixed window.

It is a general object of the invention to provide a wall panel forbuilding structures wherein the panel is initially formed with a windowopening having a window frameof metal or other rigid material which isembedded in the panel around the periphery of the opening and which isadapted to receive in permanently mounted relation therein a single paneof glass or a multiple pane glass unit.

It is a more specific object of the invention to provide a building wallpanel of precast or molded material, for example, concrete, having awindow opening and a metal window frame embedded in the concrete aboutthe periphery of the opening and adapted to receive a pane of glass or amultiple pane glass unit with its margins encased in rubber-like glazingelements which are held under compression by glazing clips wedgedbetween a portion of the frame and the glazing elements.

It is a still more specific object of the invention to provide a wallpanel construction wherein a precast or molded panel of concrete orsimilar material is provided when it is formed with a window openinghaving an edge facing in the direction of the center of the opening anda metal window frame embedded therein with the frame being formed toprovide a glazing channel in which a pane of glass having its marginssandwiched between a pair of rubber-like glazing elements is adapted tobe seated and held in fixed position therein by a plurality ofperipherally spaced rigid glazing clips seated in a recess spacedinwardly of the glazing channel, which glazing clips are constructed soas to exert pressure against the inner face of the innermost glazingelement and hold the glazing elements permanently compressed.

It is another object of the invention to provide a precast concretepanel having a metal window frame embedded in the peripheral portion ofa window opening therein which frame is adapted to receive a pane ofglass with its margins seated in a glazing channel formed in the frameand with a pair of rubber-like glazing strips encasing the margins ofthe glass pane which are placed under compression by the installation ofrigid metal clips, with the clips being shaped so that they may bewedged between a portion of the frame and a rigid glazing bar whichengages with the innermost one of the glazing strips.

These and other objects and advantages of the invention will be apparentfrom a consideration of the several panel constructions which are shownby way of illustration in the accompanying drawings wherein:

FIGURE 1 is an elevation with portions broken away of a precast concretepanel having a fixed window which incorporates the principal features ofthe invention, the view showing the inside face of the panel;

FIGURE 2 is a cross section taken on the line 22 of FIGURE 1, to anenlarged scale;

FIGURE 3 is a cross section taken on the line 3 of FIGURE 1, to anenlarged scale;

FIGURE 4 is an exploded perspective view showing the elementsconstituting the panel and window including one of the fastening devicesfor clamping the glass pane and associated glazing elements in theglazing channel of the frame;

FIGURE 5 is a cross section similar to FIGURE 2 and illustrating amodification of the panel;

FIGURE 6 is an exploded perspective view showing the panel of FIGURE 5and the window forming elements;

FIGURES 7 and 8 are cross sections similar to FIG- URES 2 and 3 andillustrating a further modification of the panel;

FIGURE 9 is an exploded perspective view showing the panel of FIGURE 8and the window forming elements;

FIGURES 10 and 12 are cross sections similar to FIG- URES 2 and 3illustrating still another modification of the panel; and

FIGURE 11 is a view taken on the line 11-11 of FIG URE 10.

Referring to FIGURES 1 to 5 of the drawings, particularly, there isillustrated a building wall unit embodying the invention which comprisesa panel 10 of precast concrete having a window opening 11 of fixeddimensions therein and a metal window frame 12 solidly embedded in theperipheral wall surface 13 which defines the opening 11.

The metal frame 12 is formed prior to the casting or molding of thepanel so that when the frame is glazed the head and the jamb have across section as shown in FIG- URE 2 while the sill has a cross sectionas shown in FIG- URE 3. All four sides of the frame 12 may be formed bybending relatively .thin metal plate, preferably stainless steel oraluminum, or all four sides of the frame may be sections of a continuousmetal extrusion, such as alumi- The head and jamb forming sections 14and 15 of the frame 12 and the sill forming section 16 may each beseparate pieces mitered or otherwise joined at the corners of theopening 11. As shown in FIGURE 2, frame sections 14 and 15 are formedwith an outer wall 17 and a parallel inner wall 18, both extendinggenerally in the plane of the opening 11. The edges of the two walls 17and 18, in the direction outwardly of the opening 11, are connected by awall 19 which is bent or shaped to form an inwardly projecting rib 20 ofU-shaped cross section. The rib 20 islocated between the frame walls 17and 18 so that it cooperates with the latter to provide a glazingchannel 21 adjacent the outer frame wall 17 and a relatively narrowchannel-like slot or recess 22 adjacent the inner frame wall 18. Theglazing channel 21 and the slot 22 are separated by the inner wallsection 23 of the rib formation 20, the later extending inwardlyapproximately half the depth of the frame walls 17 and 18. The framewalls 17 and 18 have their inner edges bent over to provide oppositelydirected narrow flanges 24 and 25 and the frame sections are embedded inthe material of the panel 10 with the edge flanges 24 and 25 flush withthe inner edge or wall 13 of the opening.

The sill or bottom section 16 of the frame 12, as shown in FIGURES 3 and4, is formed in two parts or members 26 and 27 with the former embeddedin the material of the panel and the latter forming a removable insert.The main par-t 26 of the frame section 16 comprises angularly relatedvertically and horizontally disposed wal-l members 28 and 29 with theedges of these members having narrowhorizontal and vertical flanges 30and 31 along their free edges. The main frame member 26 is embedded inthe panel edge 13 with the flange 30 of the vertical wall 28 flush withthe edge of the opening'and with the vertically disposed flange 31 ofthe horizontal wall 29 terminating at a sill forming surface 32 which isslightly above the plane of the horizontal wall 29 and well below theplane of the panel opening defining edge L) 13, this arrangement beingprovided to facilitate the glazing of the frame after the panel isinstalled in the building. The horizontal wall 29 is provided with aseries of spaced tongues 33 which are cut from the wall and bentupwardly as shown in FIGURES 3 and 4 so as to provide spaced anchoringpoints for the insert forming member 27 of the frame section 16 when themember 27 is assembled with the frame member 26.

The insert member 27 is bent or otherwise shaped to provide, whenassembled with the frame member 26, an outer vertical wall 34 ofapproximately half the height of the wall 28 and an inner vertical wall35 of the same height, with the two walls extending in oppositedirections. Between these two walls the plate is shaped to provide aninwardly extending rib forming portion 36 which corresponds to the ribformation (FIGURE 2) and two relatively narrow groove formations orslots 37 and 38 which are located adjacent the inner wall and separatedfrom the outer wall 34 by the horizontal wall 39. The outer wall 34 isprovided at its free edge with a relatively narrow flange 40 and theinsert 27 is adapted to be connected with the frame member 26 byinserting the flange 40 beneath the tongues 3-3 on the horizontal wall29 and springing the member to snap the inner margin of the inner wall35 into engagement with the flange 31 on the horizontal wall 29 so thatthe insert 27 is seated on the horizontal wall 29 as shown in FIGURE 3and the outside wall 34 is spaced from the wall 28 of the main framemember 26 so as to provide the bottom portion 21' of the glazing channel21 in the head and jamb. The panel 10 is adapted to be cast with thesections 14, 15 and 16 of the frame in position so that they areembedded in the concrete material, except for the insert forming member27 of the sill which is installed during the glazing of the frame.Anchor members, in the form of angle brackets 41, may be attached to theoutside faces of the frame so as to be embedded in the adjoiningmaterial of the panel at the time of the casting thereof.

The window frame 12 is adapted to be glazed before or after the panel ismounted in its permanent position in the building. A glass pane 42 ispositioned in the glazing channel 21, 21' with its margins encased inouter and inner glazing strips 43 and 44 which are formed of rubber-likeresilient and compressible material, for example, rubber or neoprene.The glazing elements 43 and 44 may be formed, of course, as a continuousstrip of U-shaped cross section, if desired. The glass pane 42 is of asize sufiicient to permit it to be seated in the glazing channel 21, 21'with the outermost glazing strip 43 having its inner edge facing in thedirection of the center of the opening and substantially flush with theedge surface 13 of the opening. The pane 42 is supported on shim formingblocks 45 seated in the bottom portion of the glazing channel. A rigidglazing strip 46, of relatively thick metal, for example, aluminum, isseated on the inner faces 23 and 39 of the rib formations 20 and 36about the periphery of the pane 42 in face engaging relation with theinner surface of the innermost glazing strip 44 and this rigid glassretainer strip is permanently locked in position by a series ofperipherally spaced fastener or clamping members 47. The clampingmembers 47 are preferably in the form of short sections of extrudedaluminum or similar metal having a plate-like leg form ing portion 48and a top or head portion 50 which is in a plane parallel to but offsetsomewhat from the leg portion 48. The clamping members 47 are shaped sothat when installed as shown in FIGURES 2 and 3, with the leg portion 48in the groove or solt 22 of the jamb and head portions of the frame andthe slot 37 of the sill portion 16 of the frame, the vertical face 51 ofthe head portion 50 will engage against the inside face of the rigidmetal glazing strip 46. The clamping members 47 are proportioned so thatwhen they are installed by forcing the leg forming portion 48 into theslot 37 in the frame,

pressure is applied to the rigid glazing bar member 46 suflicient tocompress the rubber glazing strips 43 and 44, thereby to clamp the glasspane 42 in the glazing channel and hold the same permanently inposition. A cover or trim strip 52 is provided for covering the glazingbar 46 along the head and jamlb. The strip 52 may be formed of bentplate such as stainless steel or aluminum or it may be an extrusion. Itis formed with a main wall providing an inwardly facing surface 53 and acurved integral flange 54 which is adapted to be seated in a recess 55formed between the head portion 50 of each clamping member and the innerwall 18 of the frame. The free marginal portion of the main wall 53 ofthe trim strip is bent at 56 so that it snaps over the outermost edge ofthe rigid glazing bar 46 to hold the trim strip 52 with its edge formingface 53 substantially flush with the surface of the edge 13 of theopening 11. At the bottom of the window a trim strip 57 is provided forthe sill which may be shaped or formed of bent plate metal or the like,to provide an inwardly facing vertical wall 58 with a headlike flange 59on its lower edge and a horizontally disposed, angularly related edgeforming wall 60 with the latter having its marginal edge bent at 61. Thetrim strip 57 is adapted to have the marginal portions of the wall 58seated in the slot 38 in the frame insert 27 and the bent edge 61snapped over the outermost edge of the metal glazing bar 46 to cover thebar 46 and retain the trim strip in position.

A modified form of the panel structure is shown in FIGURES 5 and 6. Inthis form the panel 70 has a window opening 71 which is provided at itsinnermost edge with a fixed window frame 72, of extruded aluminum,stainless steel or other rigid material. The frame 72 is embedded in thepanel 70 when the panel 70 is initially formed or cast. Since the frame72 is set in the corner of the opening 71 in this form of the panel, theframe head, sill and jamb forming portions may be of identicalconstruction, all having the cross section illustrated in FIGURE 5 andextending in the same manner around the periphery of the opening 71.

The frame 72 comprises an outer or vertical wall 73 which faces towardthe inside of the panel and an angularly related, horizontal wall 74which faces toward the center of the opening 71. A diagonal anchoringflange or plate member 75, which is embedded in the panel body, extendsfrom the juncture of the two wall members 73 and 74. The wall 74 has onits inner marginal edge a peripherally extending portion of generallyU-shaped cross section 76 which is constructed so as to form a slot-likerecess 77 opening inwardly in the direction of the center of the windowopening 71 and having the oppositely disposed inner surfaces of thewalls 78 and 78 which define the sides of the slot 77 extending at aslight angle to the wall 73 of the frame. The outermost face of the wall78 abuts the innermost face 79 of the panel 70.

The two angularly related walls 73 and 74 form a glazing channel orrecess for receiving a glass pane 80 and an associated glazing assembly81. The glazing assembly 81 comprises a pair of rubber-like glazingstrips 82 and 83 which engage the margins of the pane 89 which is seatedin the glazing channel on a block or shim 84, the latter being providedto support the pane in proper position relative to the edges of theopening 71. A rigid metal glazing bar 85 is provided which is seated onthe wall member 74 and bears against the innermost glazing strip 83. Therigid glazing bar 85 is held in position when the pane 80 is installedby a plurality of peripherally spaced fastening and clamping devices 86.Each of the fastening and clamping devices 86 is shaped so as to providea plate-like flange or stem fonming portion 87 which is adapted to beseated in the groove or slot 77 in the frame and a plate-like headforming portion or flange 88 which is in a plane generally parallel toand offset relative to the plane of the stem forming portion 87 andwhich is adapted to be forced into face engagement with the innermostface 89 of the rigid glazing bar 85. The fastening and clamping devices86 are so proportioned that when the stem 87 thereof is seated in theframe recess 77 the head 88 of the device is forced against the glazingbar 85 with substantial pressure so as to permanently compress theglazing strips 82 and 83 and rigidly clamp the glass pane 80 in theglazing channel.

A trim strip 90 is provided for covering the protruding portions of theframe and the glazing bar 85 whichis generally U-shaped -in crosssection with a vertical inside face 91 and inner and outer edge faces 92and 93; the latter terminating at the free edges in bent over flangeforming portions 94 and 95 which snap over cooperating beveled edges 96and 97 on the glazing bar 85 and the innermost frame member 76,respectively.

A further modified form of the panel is shown in FIGURES 7 to 9 of thedrawings. In this form the panel 100 has a window opening 101 with arigid metal window frame 102 embedded in an inner peripheral edge 103extending between the inside and outside surfaces of the panel. Thepanel 100 is similar to panel with the rigid metal window frame formedof extruded metal, such as aluminum.

The head and jamb forming portions or sections 104 and 105 (FIGURE 7) ofthe frame 102 are constructed so that when the frame is glazed the headand jamb have a cross section as shown in FIGURE 7, while the sillforming section 106 is formed so that it has the cross section shown inFIGURES 8 and 9. The head and jamb forming frame sections 104 and 105have a generally U-shaped cross section providing an outer or outsidewall 107, an inner or inside wall 108 and a connecting peripheral edgeforming wall or web 109 connecting the outer edges of the outer andinner wall members 107 and 108. The outer and inner wall members 107 and108 are parallel and extend generally in the plane of the opening 101.An inwardly extending rib forming member 110 on the edge wall 109 hasits inner edge bent over to form a supporting flange at 111 and dividesthe space between the walls 107 and 108 into a glazing channel 112 and aslot-like fastener receiving recess 113 adjacent the inside wall 108.The rib forming member 110 extends inwardly approximately half the depthof the frame section. The edge wall 1.09 is provided with a T-shapedoutwardly extending flange 114 which is embedded in the material of thepanel so as to further anchor the frame members.

The sill or bottom forming section 106 (FIGURES 8 and 9) of the frame102 is formed in two parts or members 115 and 116 with the member 115embedded in the material of the panel and the member 116 forming aremovable insert. The main member 115 comprises angularly related,vertical and horizontally disposed wall members 117 and 118, the freeedge of the latter having a narrow hook forming flange formation 120which terminates flush with an inner edge portion 121 of the paneladjacent the opening 101. The member 115 is embedded in the panel 100 sothat the free edge of the wall member 117 terminates flush with the edge103 which defines the opening 101. The horizontal wall 118 is providedwith an inwardly extending rib formation 122 which provides anchoringpoints for the insert forming member 116 when the member 116 isassembled with the main frame member 115. The insert member 116 isshaped to provide, when assembled with the frame member 115, a vertical,outwardly facing wall 123 which is approximately half the height of theadjacent wall 117 which it faces and a parallel, inwardly facing wall124 which is slightly less than the height of the wall 117. The twoWalls 123 and 124 extend in opposite directions and the wall 123 isprovided with a narrow edge flange 125 which is adapted to hook beneaththe abutment form ing rib 122. The two walls 123 and 124 are separatedby an S-shapedconnecting wall 126 so as to form a slot or groove 127adjacent the inside wall 124. The outside wall 123 cooperates with theoppositely disposed wall 117 to form the glazing channel 112'. Thehorizontal wall 118 of the main frame section is'pro vided with aT-shaped, outwardly extending flange 128 of the same character as theflange 114 and also for anchoring purposes.

The window frame 102 is adapted to be glazed before or after the panel100 is mounted in its permanent position in the building. The glass pane130 is positioned in the glazing channel 112 and 112 with its marginsextending between inner and outer glazing strips 131 and 132 which areformed of rubber-like resilient and compressible material, such as,rubber or neoprene. It issupported on blocks 133 of wood or othersuitable material, placed in the bottom of the sill section 115 of theframe 102. A rigid glass retaining glazing bar 134, preferably formed ofaluminum or like material, is seated against the innermost face 135 ofthe glazing strip 132 on the flange 111 of the rib formation 110 of thehead and jamb sections and the uppermost wall 136 of the insert member116 in the sill section. The glazing bars 134 are clamped in position bya plurality of clamping and fastening devices 137. Each of the clampingand fastening devices 137 comprises two plate-like portions 138 and 139which form the stem and head thereof and which are in parallel offsetplanes, being connected by an angular portion 140. The clamping andfastening devices 137 are installed by inserting the stem portion 139 inthe slots 113 and 127 and forcing the top or head portion 138 into tightengagement with the innermost face 141 of the glazing bar 134. Theclamping and fastening devices 137 are proportioned so that wheninstalled as shown in FIGURES 7 and 8 pressure is applied to the glazingbar 134 which is sufficient to permanently compress the glazing strips131 and 132 sufficiently to rigidly retain the glass pane 130 in theglazing channel. A cover strip 142 of generally T-shaped section isemployed to complete the assemblyof the head and jamb and also the sillsection of the frame. The stem portion'143 of the cover strip isfrictionally engaged between the fastening devices 137 and the insidewall members 108 and 124 while the outside edge is bent at 144 to seaton the tapered or beveled outside edge 145 of the glazing bar 134.

Still another form of the panel is shown at in FIG- URES 10 to 12. Inthis form the panel has a window opening 151 which is provided at itsedge and intermediate the inner and outer faces of the panel with afixed window frame 152 embedded in the panel 150 when the panel isinitially cast. The head and jamb forming portions of the frame are ofidentical construction while the sill section is modified to enable thewindow to be glazed. The frame 152 is formed of bent metal plate, suchas aluminum or stainless steel, with the head section which is indicatedat 153 having the cross section shown in FIGURE 10 and the sill sectionwhich is indicated at 154 having the cross section shown in FIGURE 12.The entire frame is cast in the panel so that its inner peripheralsurface in the direction of the center of the opening 151 is flush withthe inner edge surface 155 of the opening 151. The panel is formed withan inner recessed portionat the sill which has the surface 156 extendingfrom the inside face of the panel to the sill section 154 so as topermit a pane of glass 157 to be inserted in the frame for the glazingoperation before or after the panel is installed in the building wall.

The head forming frame section 153 has a generally U-shaped crosssection providing a double ply outside wall 158 and a parallel insidewall 160, both of which extend The sill forming section 154 of the frame152 is also bent to form a generally U-shaped cross section with adouble ply outside wall 163, a shorter inside wall 154 and a connectingedge wall 165. The outside wall 163 is formed in the same manner as theoutside wall 153 with an extended marginal portion 162 forming ananchorage member. The top edge of the inside Wall 164 terminates at thesurface 156 and the outer edge forming wall 165 is provided with aseries of longitudinally spaced, bent up or bent in tongues 166 whichform an outer abutment or anchorage for an insert member 167. The insertmember 167 has a bottom forming flange 168 which is adapted to beengaged beneath the tongues 166 and a reversely bent portion ofinverted, generally V-shape in cross section providing an upstandingwall forming flange 170 and a downwardly and inwardly slanted wallmember 171 having a hook-shaped foot 172 which abuts against the insidesurface of the wall 164 at the juncture of the latter with the edge wall165. The walls 163 and 170 which are substantially parallel cooperate toform with the edge wall 165 a glazing channel 173 in the sill formingsection 154 which is a continuation of the glazing channel 173 formedbetween the outside and inside walls 158 and 169 of the head and jambsections (FIGURE along the other three sides of the frame 152.

A shallow groove 174 is provided in the margin of the inside wall of thehead and jamb sections for receiving an edge of a fastening device 175.The wall of the insert 167 in the frame section 154 is provided with alike groove or recess 176 for accommodating fastener members 175. Thepane 157 with its edges encased in glazing strips 177 and 178 ofresilient and compressible material, such as rubber, neoprene or likematerial, is inserted in the glazing channel 173, 173 and supported onblocks 18%) of suitable material which are placed in the sill section154 as shown in FIGURE 12. A rigid metal glazing bar 131 having ashallow groove or recess 182 on its inside surface is positioned againstthe inner face 183 of the innermost compressible glazing strip 178 andthe glass and glazing assembly is clamped into position by installing aplurality of peripherally spaced clamping and fastening devices 175.

The clamping and fastening devices are in the form of rectangular platemembers of metal or other rigid material having rounded corners 184 anda tool receiving slot 185 which is adapted to accommodate the blade of ascrewdriver or similar tool. The fastening devices 175 have a dimensionin the one direction which is somewhat greater than the normal distancebetweenthe grooves 174 and 182 in the head jamb sections and the grooves176 and 182 in the sill section so that the clamping and fasteningdevices may be inserted, as indicated in dotted line position in FIGURE11, and rotated in the plane thereof to seat the ends in the grooves174, 182 and 176, 182, leaving the devices installed with the glazingstrips 177 and 178 compressed so as to firmly hold the pane 157 in fixedand sealed relation in the frame.

A cover or trim strip 186 (FIGURES 10 and 11) is provided to completethe frame assembly along the head and jamb sections. The marginalportions of the trim strip 186 are bent inwardly and then outwardly intoparallel relation so as to form two marginal flanges 187 and 188 whichare offset inwardly of the edges of the body of the strip and which fitinto the glazing channel 173' between the inside wall 160 and theinnermost face of the glazing bar 181, the flanges 187 and 188 being cutout to clear the clamping and fastening elements 175 where they arepositioned. The glazing bar .181 is positioned with its inner edge faceoffset inwardly of the surface 155 of the opening so as to accommodatethe one edge of the trim strip 186 while the inside wall 160 is formedwith the marginal pocket 190 to accommodate the other edge of the trimstrip 186 whereby the inside surface of the trim strip is fiush with thesurface 155.

A trim strip 191 is provided for the sill section which has a relativelydeep flange-like inner wall forming portion 192 with its marginal edgeseated in the recess between the inside wall 164 of the frame section154 and the wall forming portion 171 of the insert 167. At its otheredge the trim strip 191 is reversely bent and provided with a flange 1%so as'to seat on the glazing bar 181 with the flange 193 extending alongthe inside surface of the latter. The flange 193 is cut out whererequired to clear the clamping and fastening devices 175.

While a single pane of glass is shown in all of the illustrated forms ofthe window, it will be understood that in each of the forms thereof thewindow frame may be glazed with .a multiple pane glass unit. Also, whilethe panel in each of the forms is described as formed of concrete, itmay be cast or molded of other suitable material.

While particular materials and specific details of construction arereferred to in describing the several forms of the panel which areillustrated, it will be understood that other materials and equivalentdetails of construction may be resorted to within the spirit of theinvention.

We claim:

1. A wall panel which is precast of concrete material with a windowopening and a window frame assembly comprising a main frame of rigidmaterial embedded in the material surrounding the opening and extendingin the plane of the opening and in the direction outwardly of the centerofthe opening, said main frame being generally rectangular in crosssection with spaced parallel inside and outside wall members which areconnected by an edge forming web, said frame being formed with head andjamb portions having a rib extending inwardly toward the center of theopening and between said outside and inside wall members which rib isspaced from the outside wall member so as to provide a glazing channelbetween said rib and said outside wall member, and said main framehaving a bottom sill forming portion with the inside wall thereof havingits innermost edge spaced from the innermost edge of the inside wall ofsaid head portion a distance which is greater than the distance betweenthe innermost edge of the outside wall members of the head and sillportions and said sill portion having an insert member with a rib formedtherein which aligns with the rib in said head and jamb portions, aglazing assembly seated in the glazing channel, which glazing assemblycomprises a glass pane of a size greater than the size of the openingdefined by the innermost edges of the outside wall of the main frame sothat the margins thereof extend over the innermost margins of saidoutside wall and said pane having a dimension in the direction betweensaid head and sill portions which is less than the distance between theinnermost edges of the inside wall members of said head and sillportions, inside .and outside glazing strips of elastic materialextending along the margins of the glass pane and in engagement withoppositely disposed faces thereof, a rigid metal glazing bar seated onsaid rib and engaging against the innermost surface of the insideglazing strip, said frame having a pocket forming recess extendingadjacent the inside face of the inside wall member and a plurality ofrelatively short rigid glazing clips disposed in peripherally spacedrelation about said frame with each of said clips having a portionthereof engaged in said recess and another portion engaging theinnermost face of said glazing bar, and said glazing clips beingproportioned in relation to the normal distance between the inside wallmember and the glazing bar so as to exert constant pressure on saidglazing bar and thereby permanently compress the glazing strips.

2. A wall panel as recited in claim 1, and the insert in said sillportion being shaped to provide the pocket forming recess extendingadjacent the inside wall of said sill portion in which the glazing clipsare engaged.

3. A wall panel as recited in claim 1, and said glazing clips eachhaving an edge portion engaged in the recess adjacent the inside walland .an oppositely disposed portion engaging the glazing bar.

4. A wall panel which is preformed of concrete material with a windowopening and a window frame assembly comprising a main frame of rigidmaterial embedded in the material surrounding the opening and extendingin the plane of the opening and in the direction outwardly of the centerof the opening, said main frame being generally rectangular in crosssection with spaced parallel inside and outside wall members which areconnected by an edge forming -web and with a glazing channel adjacentthe outside wall thereof, said main frame having head and jamb portionsand a sill portion with the inside wall of said sill portion having theinnermost edge thereof spaced from the innermost edge of the inside wallmember of said head portion a distance which is greater than thedistance between the innermost edges of the outside wall members of saidhead and sill portions, said sill portion having an insert spaced fromsaid outside wall member with a wall forming portion extending inwardlyin the direction of the center of the openingand adjacent the insidewall of said sill portion, a glazing assembly seated in the glazingchannel, which glazing assembly comprises a glass pane of a size greaterthan the size of the opening defined by the innermost edges ofsaidoutside wall members so as to extend at its margins over the innermostmargins of said outside wall members and said pane having a dimension inthe direction between said head and sill portions which is less than thecorresponding dimension of the opening between the innermost edges ofthe inside wall members of said head and sill portions, inside andoutside glazing strips of elastic material extending along the marginsof the glass pane and in engagement with oppositely disposed facesthereof, and a rigid metal glazing bar engaging the innermost face ofthe inside glazing strip, said frame having means forming a recessextending adjacent the inside face of the inside wall thereof and aplurality of relatively short, rigid glazing clips spaced around saidframe, each of said glazing clips having a portion thereof engaging insaid recess and another portion engaging the innermost face of said lbglazing bar, and said glazing clips being proportioned in relation tothe normal distance between the frame inside wall member and the glazingbar so that they exert constant pressure on said glazing bar and therebypermanently compress the glazing strips.

5. A wall panel as recited in claim 4, and said glazing clips eachcomprising a fiat plate member having an edge portion engaging in saidrecess and an opposite edge portion engaging the innermost face of saidglazing bar in pressure applying relation, said plate member having adimension between said edge portions which is greater than the normaldistance between said recess forming means and the glazing b'ar,saidpltate member having a dimension between adjoining edge portionswhich is less than said distance and said plate member having means forengaging a tool therewith to rotate said plate member about an axisnormal to the plane thereof.

References Cited by the Examiner UNITED STATES PATENTS 1,483,851 2/ 1924Perry 5221 3 1,823,020 9/ 1931 Axe 52127 1,966,196 7/1934 Benoit 52475 X2,056,024 9/1936 Stuart 52-4OO 2,161,792 6/1936 Bayley 52 213 2,248,2977/ 1941 Chalfee 52400 2,454,975 11/ 1948 Pelley 52-498 3,118,188 1/ 1964Dulebohn et. al 52500 3,151,715 10/1964 Hagerty et al 52127 FOREIGNPATENTS 787,173 6/1935 France. 462,916 3/1937 Great Britain.

FRANK L. ABBOTT, Primary Examiner.

JACOB L. NACKENO-FF, HENRY C. SUTHERLAND,

Examiners.

A. C. PERI-1AM, Assistant Examiner.

4. A WALL PANEL WHICH IS PERFORMED OF CONCRETE MATERIAL WITH A WINDOWOPENING AND A WINDOW FRAME ASSEMBLY COMPRISING A MAIN FRAME OF RIGIDMATERIAL EMBEDDED IN THE MATERIAL SURROUNDING THE OPENING AND EXTENDINGIN THE PLANE OF THE OPENING AND IN THE DIRECTION OUTWARDLY OF THE CENTEROF THE OPENING, SAID MAIN FRAME BEING GENERALLY RECTANGULAR IN CROSSSECTION WITH SPACED PARALLEL INSIDE AND OUTSIDE WALL MEMBERS WHICH ARECONNECTED BY AN EDGE FORMING WEB AND WITH A GLAZING CHANNEL ADJACENT THEOUTSIDE WALL THEREOF, SAID MAIN FRAME HAVING HEAD AND JAMB PORTIONS ANDA SILL PORTION WITH THE INSIDE WALL OF SAID SILL PORTION HAVING THEINNERMOST EDGE THEREOF SPACED FROM THE INNERMOST EDGE OF THE INSIDE WALLMEMBER TO SAID HEAD PORTION A DISTANCE WHICH IS GREATER THAN THEDISTANCE BETWEEN THE INNERMOST EDGES OF THE OUTSIDE WALL MEMBERS OF SAIDHEAD AND SILL PORTIONS, SAID SILL PORTION HAVING AN INSERT SPACED FROMSAID OUTSIDE WALL MEMBER WITH A WALL FORMING PORTION EXTENDING INWARDLYIN THE DIRECTION OF THE CENTER OF THE OPENING AND ADJACENT THE INSIDEWALL OF SAID SILL PORTION, A GLAZING ASSEMBLY SEATED IN THE GLAZINGCHANNEL, WHICH GLAZING ASSEMBLY COMPRISES A GLASS PANE OF A SIZE GREATERTHAN THE SIZE OF THE OPENING DEFINED BY THE INNERMOST EDGES OF SAIDOUTSIDE WALL MEMBERS SO AS TO EXTEND AT ITS MARGINS OVER THE INNERMOSTMARGINS OF SAID OUTSIDE WALL MEMBERS AND